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The average of N numbers is 12. If a number 6 is removed, then average becomes 14. What is the value of N?
- A5
- B4
- C6
- D3
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CCommunity
Average of N numbers = 12
∴ Sum of N numbers = 12N
According to problem,
⇒ 12N - 6 = 14(N - 1)
⇒ 12N - 6 = 14N - 14
⇒ 2N = 8
⇒ N = 4
∴ Sum of N numbers = 12N
According to problem,
⇒ 12N - 6 = 14(N - 1)
⇒ 12N - 6 = 14N - 14
⇒ 2N = 8
⇒ N = 4